Crank and lever mechanism.



H. SCHWARTZ & A. A. GRUNDY.

CRANK AND LEVER MECHANlSWh APPLICATION FILED FEB. 2, 191e.

Patented July 3, 1917.

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CRANK AND LEVER MECHANISM.

APPLICATION FILED FEB. 2, 1916. 1,232, 1 01 Patented July 3, 1917.

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Philadelphia, countyofBhiladelphia, State of Pennsylvania, and Brooklyn, county of Kings, State ofNew. York, have invented a I new and useful Improvement in Crank. and

Lever Mechanism; of1which the followingis a full, clear, and exact-description;reference being had 'to the accompanying drawings,

which form a a partflof this .1 specification.

Our invention relates to flat or straight knittingimachin'es. Theolo'jectwof ourinventionis to improve the mechanism forr'reciprocating the rods carryingithe cam plates. Such. mechanism usually comprises a crank pivoted at oneend of the machine, a .COII- necting rod pivotally connected with the crank and extendingtothe otherend of the machine, and a handle-on the pivot between crank and rod;therod being connected to a cross frame slidableon longitudinally extending fixedrods, and the rods carrying. the cam plates being connected to theisaid frame.

-The ordinaryconstruction is openjtosevoral objections, amongwhich mayiibe-mentionedthe lack bfycapacityaofadjusting the length of the crank arm without producing excessive wear andfltearat the bearing; the weakness of the connection between the crank arm and the connecting rod; and the side strain ortwisting action of the cross frame upon thefixed rods upon whichritv slides. In the accompanying drawings is shown a preferred embodiment of an invention adapted to overcome these defects.

Figure 1 is a plan view of a fiat or straight knitting machine embodying features of our invention. Fig. 2 is a front elevation of same. Fig. 3 is an end View of Fig. 2, enlarged. Figs. 4: and 5 are detail views of features of the invention.

The frame a ofthe machine carries the two end pieces I) and 0 whose upper faces are beveled off to an angle of approximately 100 degrees with each other to adapt them to receive the needle beds. Longitudinally eX- tending rails cl and e are rigidly secured to the end pieces 6 and 0. These rails are grooved on their opposing sides to form guide-ways for the sliding cam plates 7 and g on the front and back of the machlne.

tion.

Rods '72. connect the cam plates with'a fraine z slidable on rods 7' arranged in:parallel relation one above the other and rigidly secured to one end of themachine.

The camsare notshown, nor do we show the specific construction of the "needle beds, as'th'ese form no part of our invention. Nor

is it necessary that the camp'lates be supported or reciprocated "precisely as described and shown. p I

.We shall nowjp roceedto describe that part of the construction embodying our inven- At the end of the machine opposite the frame '5 is a: bracketic, in, which turnsa shaft Z carryinga head m. Thishead is cut away diametrallyalonglts axis to form a deep narrow-slit shallow groove n which almost splits the head intotwo-eq'ual parts. An orifice 0 is cut through thehead m in the direction of its diameter and parallel to the-slit n and in such manner that itintersects said slit, one half of the orifice being at one side of the slit and the other'half at "the other side of the slit. This orifice is shapedto re ceive the crank t.

Extending "through the head m in the direction of its diameterand atright angles to the direction of extension of the orifice 0 is a hole 79, one end of which is screw-threaded; while the other end is not.

The crank tis'insertedin the orifice 0 and is adjusted therein so as to provide the desired lengthof crank. Ampin q isinserted in the hole 79. This pin is threaded at one end so as to have a screw-threaded engagement in the hole. At the other end of the pin it is shouldered at r and provided with a handle 8. By continuing to turn the pin 9 after its shoulder abuts against the head m, the two split parts of the head are forced toward each other, thereby clamping the crank arm securely in the head.

The connecting rod 4; is provided with an offset sleeve 10. Within this sleeve extends a pin it secured to the upper end of the crank t. Thereby the bearing between the crank and connecting rod is lengthened and strengthened and the two members held in perfect alinement and prevented from twisting one upon the other.

A tubular handle w is slipped onto the bearing 10. By means of this handle the operator reciprocates the connecting rod o and I the frame 2', which is connected to the rod '4) i by means to be now described.

Mounted on the frame '5 are two ears 1 y; These ears are arranged directly above the two shafts j, j (which are in vertical alinement) and-on opposite sides of a plane coincident with the axes of both shafts. The rod '0 is bent inwardly and thence, at the end, longitudinally; this end extending between the ears 3 3/ and being confined in place by a pin, bolt or the like extending through the ears and the end of the rod.

I By thisarrangement the back and forth pulling movement of the rod creates no twisting strain between the frame '11 and the connecting rod 0 or between the frame 2' and the rods j. The frame i and rods j are maintained in perfect alinement, causing the connected halves, said member also provided with a crosswise orifice extending along opposite sides of said split and formed therefore partly in one half and partly in the other half of said member, said orifice adapt ed to receive said crank arm, and means to clamp the two halves of the member to hold the crank arm in its adjusted position.

2. The combination with actuated mecha- Copies of this patent may he obtaiged for nism, a crank arm, and a connecting rod between the crank arm and the actuated mechanism, of an oscillatory member split for part of its length to divide it into two integrally connected halves, said member also provided with a crosswise orifice extending along opposite sides of said split and formed therefore partly in one half and partly in the other half of said member, said orifice adapted to receive said crank arm, said member having a threaded hole extending across said member through both halves thereof at one side of said orifice, and a threaded bolt extending through .said hole and serving to clamp the two halves of said member upon the crank arm; I

y 3. The combination with actuated mechanism and aconnecting rod attached thereto, of an elongated handle sleeve fixed to the connectingrod, one end. of the sleeve being in line with the endv of the connecting rod while the major length of the sleeve extends to one side of the connecting rod, a pivoted crank arm one end of which extends toward the other side of the connecting rod and an elongated'pin on the crank arm extending into said sleeve which affords a bearing therefor. I

4. The combination with reciprocating mechanism of 'a connecting rod attached to said mechanism at approximately a point on the longitudinal center line of said mecha nism, said connecting rod thence extending outward and thence longitudinally alongside said mechanism, a pivoted crank arm, a pin on the armextending parallel to the axis on which the arm is pivoted and outwardly from said mechanism, and a sleeve fixedly secured to'the connecting rod and adapted to receive and form an elongated bearing for said pin. I

In testimony of which invention, we have hereunto set our hands, at Philadelphia, on this 28th day of January, 1916.-

HERMAN SCHWARTZ. ALFRED A. GRUNDY.

five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

